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MRI images show a single fetus in a horizontal lie. The fetal sac is located in the inferior aspect of the uterus. The placenta is adjacent to the cervix and located inferoposterior to the fetal sac. The previous caesarean scar is at the anteroinferior aspect of uterus, which is demonstrated as a linear hyperintense signal on T2WI. The endometrial cavity is displaced anteriorly by the sac and the posterior lower myometrial wall is thin suggestive of invasion.